Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4RDB callsign genealogy
Currently held by BERGERON, ROBERT D
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by N4RDB's current licensee, walking backwards.
- BERGERON, ROBERT DSCgranted 2004-12-01cancelled 2011-03-25
Successor callsigns
Callsigns held now by people who previously held N4RDB.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign N4RDB, oldest first.
- BAKER, HARRY T AL1997-05-19 → cancelled 2009-05-20
- BERGERON, ROBERT D ME2021-01-08 active